Browsing by Author "Javili, Ali"
Now showing items 1-20 of 42
-
Aspects of computational homogenization in magneto-mechanics: Boundary conditions, RVE size and microstructure composition
(Elsevier, 2018-01)In the present work, the behavior of heterogeneous magnetorheological composites subjected to large deformations and external magnetic fields is studied. Computational homogenization is used to derive the macroscopic ... -
Aspects of interface elasticity theory
(Sage Publications Ltd., 2018)Interfaces significantly influence the overall material response especially when the area-to-volume ratio is large, for instance in nanocrystalline solids. A well-established and frequently applied framework suitable for ... -
Atomistic two-, three- and four-body potentials. Spatial and material settings
(Elsevier Ltd, 2021-09)In molecular dynamics or molecular statics (MD/MS) multi-body potentials empirically capture the energetic interactions in atomistic systems enabling the computation of the corresponding atomistic forces as energetic ... -
Bifurcation behavior of compressible elastic half-space under plane deformations
(Elsevier, 2020)A finitely deformed elastic half-space subject to compressive stresses will experience a geometric instability at a critical level and exhibit bifurcation. While the bifurcation of an incompressible elastic half-space is ... -
Boundary viscoelasticity theory at finite deformations and computational implementation using isogeometric analysis
(Elsevier BV, 2021-02-01)Use of surface elasticity theory has experienced a prolific growth recently due to its utility in understanding the mechanics of nanomaterials and soft solids at small scales. Various extensions of surface elasticity theory ... -
Bounds on size effects in composites via homogenization accounting for general interfaces
(Springer, 2020-01)This manuscript provides novel bounds and estimates, for the first time, on size-dependent properties of composites accounting for generalized interfaces in their microstructure, via analytical homogenization verified by ... -
Bounds on size-dependent behaviour of composites
(Taylor & Francis, 2018)Computational homogenisation is a powerful strategy to predict the effective behaviour of heterogeneous materials. While computational homogenisation cannot exactly compute the effective parameters, it can provide bounds ... -
The computational framework for continuum-kinematics-inspired peridynamics
(Springer Science and Business Media B.V., 2020)Peridynamics (PD) is a non-local continuum formulation. The original version of PD was restricted to bond-based interactions. Bond-based PD is geometrically exact and its kinematics are similar to classical continuum ... -
Continuum-kinematics-inspired peridynamics. Mechanical problems
(Elsevier, 2019)The main objective of this contribution is to develop a novel continuum-kinematicsinspired approach for peridynamics (PD), and to revisit PD’s thermodynamic foundations. We distinguish between three types of interactions, ... -
Continuum-kinematics-inspired peridynamics: thermo-mechanical problems
(Springer, 2021-03-31)The recently proposed continuum-kinematics-inspired peridynamics (CPD) is extended to account for thermo-mechanical coupling at large deformations. The key features of CPD are that it is geometrically exact and is built ... -
Correction to: The computational framework for continuum-kinematics-inspired peridynamics
(Springer Science and Business Media Deutschland GmbH, 2020-09-03) -
Describing droplet motion on surface-textured ratchet tracks with an inverted double pendulum model
(American Chemical Society, 2021-04-27)We describe the motion of a droplet on a textured ratchet track using a nonlinear resonator model. A textured ratchet track is composed of a semicircular pillar array that induces a net surface tension local gradient on a ... -
Designing tunable composites with general interfaces
(Elsevier, 2019)In this manuscript, we employ interface enhanced computational homogenization to explore and detail on a number of unfamiliar characteristics that composites can exhibit at different length scales. Here, the interface ... -
A different catch for Poisson
(Springer, 2022-05-04)Poisson’s ratio, similar to other material parameters of isotropic elasticity, is determined via experiments corresponding to small strains. Yet at small-strain linear elasticity, Poisson’s ratio has a dual nature; although ... -
A displacement-based approach to geometric instabilities of a film on a substrate
(Sage Publications, 2019-02)When a thin film adhered to a compliant substrate is growing, it will eventually buckle in order to release the compressive stresses accumulated within the film due to growth. Such geometric instabilities caused by compressive ... -
Extended general interfaces: Mori–Tanaka homogenization and average fields
(Elsevier Ltd, 2022-08-24)A well-established methodology to capture interphases in heterogeneous materials is to replace them by a zero-thickness interface model. Commonly accepted interface models intuitively assume that to satisfy the angular ... -
From beams to bilayers: A unifying approach towards instabilities of compressible domains under plane deformations
(Elsevier Ltd, 2021-10)Instabilities that form when a domain of compliant elastic material goes under compressive forces are prevalent in nature and have found many applications. Even though instabilities are observed in a myriad of fields and ... -
Generalized interfaces via weighted averages for application to graded interphases at large deformations
(Elsevier Ltd, 2021-04)Finite-thickness interphases between different constituents in heterogeneous materials are often replaced by a zero-thickness interface model. Commonly accepted interface models intuitively assume that the interface layer ... -
A geometrically exact formulation of peridynamics
(Elsevier BV, 2021-02)The main objective of this contribution is to develop a geometrically exact peridynamics (PD) formulation wherein the basic elements of continuum kinematics are preserved. The proposed formulation accounts for large ... -
Growth-induced instabilities of an elastic film on a viscoelastic substrate: Analytical solution and computational approach via eigenvalue analysis
(Mathematical Sciences Publishers, 2018)The objective of this contribution is to study for the first time the growth-induced instabilities of an elastic film on a viscoelastic substrate using an analytical approach as well as computational simulations via ...
